I rewrote the words to "Havana" by Camila Cabello and renamed it "Denominator Ooh-Na-Na" to be about finding common denominators and comparing fractions. My students LOVED it, learned how to rap (kind of), and I was able to reuse phrases from this song while teaching to remind them how to find common denominators when comparing, adding, or subtracting fractions. I added actions and my kids memorized it. I could figure out a way to send you the actions if you're interested. I used the youtube karaoke version of the song when singing this with them (URL at the top of the word document). Included is a track of me "trying" to sing the song so you can get a better idea of how it goes. Enjoy!